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1. Acid Etching-Induced In Situ Growth of λ-MnO₂ over CoMn Spinel for Low-Temperature Volatile Organic Compound Oxidation

Author:
Cangpeng Shan; Yan Zhang; Qian Zhao; Kaixuan Fu; Yanfei Zheng; Rui Han; Caixia Liu; Na Ji; Weichao Wang; Qingling Liu
Source:
Environmental science & technology 2022 v.56 no.14 pp. 10381-10390
ISSN:
1520-5851
Subject:
Fourier transform infrared spectroscopy; acetates; acetone; carbon dioxide; catalytic activity; electron transfer; environmental science; formates; oxidation; oxygen; reaction kinetics; technology; volatile organic compounds
Abstract:
... Surface lattice oxygen is crucial to the degradation of volatile organic compounds (VOCs) over transition metal oxides according to the Mars–van Krevelen mechanism. Herein, λ-MnO₂ in situ grown on the surface of CoMn spinel was prepared by acid etching of corresponding spinel catalysts (CoMn-Hx-Ty) for VOC oxidation. Experimental and relevant theoretical exploration revealed that acid etching on t ...
DOI:
10.1021/acs.est.2c02483

2. Characterization of aroma-active compounds in Dongli by quantitative descriptive analysis, gas chromatography-triple quadrupole tandem mass spectrometry, and gas chromatography-olfactometry

Author:
Jia-Nan Chen; Hao-Ting Han; Chun-Ju Liu; Qi Gao; Xiao-Wen Wang; Jun-Wei Zhang; Masaru Tanokura; You-Lin Xue
Source:
Journal of food science and technology 2022 v.59 no.10 pp. 4108-4121
ISSN:
0022-1155
Subject:
acetates; acetone; anise; benzaldehyde; butyrates; cultivars; flavor; food science; least squares; methyl chavicol; odors; pears; tandem mass spectrometry; technology; wines
Abstract:
... Dongli, or frozen pear, is a traditional Chinese snack with a unique flavor. This study identified the aroma-active volatile compounds (VOCs) in Dongli using quantitative descriptive analysis (QDA), gas chromatography-triple quadrupole tandem mass spectrometry (GC-MS/MS), and gas chromatography-olfactometry (GC-O). QDA indicated that Dongli of all cultivars presented increased sweet and wine aroma ...
DOI:
10.1007/s13197-022-05463-8

3. Earth-friendly-assessed chromatographic platforms for rapid analysis of sulfacetamide sodium and prednisolone acetate in presence of sulfanilamide impurity: Application on ophthalmic formulation and aqueous humor

Author:
Rania A. Sayed; Ahmed R. Mohamed; Wafaa S. Hassan; Manal S. Elmasry
Source:
Sustainable chemistry and pharmacy 2022 v.27 pp. 100694
ISSN:
2352-5541
Subject:
acetates; acetone; ammonia; antibiotics; bioavailability; chemical species; chloroform; densitometry; green chemistry; methanol; pH; phosphoric acid; prednisolone; rabbits; rapid methods; silica gel; sodium; sulfacetamide; sulfanilamide
Abstract:
... Sulfacetamide sodium as an antibacterial agent is co-formulated with prednisolone acetate in Phenamide-P® ophthalmic suspension to cure the ophthalmic infections correlated with inflammatory disorders. For the first time, two innovative, sensitive, specific, and robust chromatographic platforms were developed and their conditions were optimized for rapid analysis of the aforementioned drugs either ...
DOI:
10.1016/j.scp.2022.100694

4. An Esterase with Increased Acetone Tolerance from Bacillus subtilis E9 over Expressed in E. coli BL21 Using pTac Bs-est Vector

Author:
P. Soumya; Jayachandran Kochupurackal
Source:
Molecular biotechnology 2022 v.64 no.7 pp. 814-824
ISSN:
1073-6085
Subject:
Bacillus subtilis; DNA assembly; Escherichia coli; acetates; acetone; amino acids; ampicillin; biotechnology; computer simulation; esterases; genes; ligands; peptides; plasmids; recombinant proteins; replication origin; solvents
Abstract:
... Bacillus subtilis E9 was identified as a potential strain producing esterase. The gene coding esterase from B. subtilis E9 was amplified using esterase-specific primers and the sequence was translated in silico. The presence of conserved catalytic triad amino acid residues (His-Ser-Asp/Glu) confirmed the functional nature of the esterase enzyme. Docking studies conducted with modeled protein and t ...
DOI:
10.1007/s12033-022-00458-4

5. GC-FID based metabolite profiling of leave extracts from naturally growing Ocimum basilicum L. Ocimum gratissimum L. and Ocimum tenuiflorum L.

Author:
Arun Dev Sharma; Inderjeet Kaur
Source:
Journal of BioScience and Biotechnology 2022 v.11 no.1 pp. 63-67
ISSN:
1314-6246
Subject:
Ocimum basilicum; Ocimum gratissimum; Ocimum tenuiflorum; acetates; acetone; biotechnology; cultivars; metabolites; solvents; therapeutics
Abstract:
... Ocimum spp., also known as “tulsi” member of Lamiaceae, are widely studied herbal plants. Due to their diverse biological activities, Ocimum basils are the most popular traditional herbal remedies against various diseases. The aim of the present study is comparative chemical composition profiling of bioactive compounds from three species viz: Ocimum tenuiflorum (Black tulsi), Ocimum gratissimum (J ...

6. Gas chromatographic-mass spectrometric analysis, antioxidant, antiproliferative and antibacterial activities of the essential oil of Prangospabularia

Author:
Javid A. Banday; Zubaid-ul-khazir Rather; Gulam N. Yatoo; Mohammad Asif Hajam; Sajad A. Bhat; Vichangal Pridiuldi Santhanakrishnan; Alia Farozi; Manzoor A. Rather; Shahid Rasool
Source:
Microbial pathogenesis 2022 v.166 pp. 105540
ISSN:
0882-4010
Subject:
Escherichia coli; Micrococcus; Prangos pabularia; acetates; acetone; adenocarcinoma; agar; aldehydes; antibacterial properties; antineoplastic activity; breasts; cell lines; cytotoxicity; epithelium; essential oils; free radicals; humans; lungs; oils; pathogenesis; streptomycin; sulfates; toxicity testing; uterine cervical neoplasms; India
Abstract:
... The essential oil composition of the shoot parts of Prangos pabularia, growing in Drass area of Ladakh, India, along with its antioxidant, antibacterial and anticancer activity, is reported for the first time. Gas chromatography coupled with mass spectrometry (GC-MS) revealed the presence of 31 constituents, representing 97.342% of the total essential oil. The major constituents of essential oil w ...
DOI:
10.1016/j.micpath.2022.105540

7. Glycerol Utilization as a Sole Carbon Source Disrupts the Membrane Architecture and Solventogenesis in Clostridium beijerinckii NCIMB 8052

Author:
Eric Agyeman-Duah; Santosh Kumar; Bhavana Gangwar; Victor C. Ujor
Source:
Fermentation 2022 v.8 no.7 pp. -
ISSN:
2311-5637
Subject:
Clostridium beijerinckii; acetates; acetone; biotransformation; butanol; butyrates; carbon; coenzyme A; enzyme activity; fermentation; gene expression; glucose; glyceraldehyde-3-phosphate dehydrogenase; glycerol; glycerol dehydrogenase; metabolites; palmitic acid; solvents; value added
Abstract:
... Efficient bioconversion of abundant waste glycerol to value-added chemicals calls for a wider range of fermentative workhorses that can catabolize glycerol. In this study, we used quantitative gene expression and solvent profiling, qualitative metabolite analysis, and enzyme activity assays to investigate the factors that limit glycerol utilization as a sole carbon source by Clostridium beijerinck ...
DOI:
10.3390/fermentation8070339

8. Mechanism and conformation changes for the whole regeneration process of cellulose in pyridinium-based ionic liquids

Author:
Chengjie Li; Timing Fang; Guohui Zhou; Mengmeng Ge; Yao Li; Xiaomin Liu
Source:
Cellulose 2022 v.29 no.10 pp. 5479-5492
ISSN:
0969-0239
Subject:
acetates; acetone; cellulose; ethanol; glucose; hydrogen; ionic liquids; models; molecular dynamics
Abstract:
... In this work, mechanism and conformation changes of cellulose regenerated from the ionic liquid by anti-solvents (water, ethanol and acetone) were investigated by molecular dynamics simulation. To explore the regeneration mechanism, a cellulose model with seven glucose chains was constructed, both the dissolution and regeneration processes of cellulose in N-butyl pyridinium acetate ([Bpy][OAc]) we ...
DOI:
10.1007/s10570-022-04639-x

9. Potentiality of phytochemical compounds isolated and identified from Jatropha curcas L. against Odontotermes obesus Rambur

Author:
Krupal Kanubhai Patel; A.V.R.L. Narasimhacharya
Source:
Journal of natural pesticide research 2022 v.2 pp. 100009
ISSN:
2773-0786
Subject:
Jatropha curcas; Odontotermes obesus; acetates; acetone; biopesticides; chemical composition; chemical constituents of plants; chloroform; financial economics; hexane; methanol; mortality; oleic acid; phenol; phytochemicals; relative humidity; research; solvents; terpenoids
Abstract:
... Infestations of termites in agricultural fields as well as in domestic and industrial areas have been one of the major problems incurring a great economic loss since long. Chemical pesticides are being used to prevent the devastating action of termites which are deterrent for termites but concomitantly hazardous for health, damage ecological cycles and are perdurable in nature for long. In search ...
DOI:
10.1016/j.napere.2022.100009

10. Revealing the mechanism of high water resistant and excellent active of CuMn oxide catalyst derived from Bimetal-Organic framework for acetone catalytic oxidation

Author:
Lei Wang; Yonggang Sun; Yinbo Zhu; Juan Zhang; Jie Ding; Jingdan Gao; Wenxin Ji; YuanYuan Li; Liqiong Wang; Yulong Ma
Source:
Journal of colloid and interface science 2022 v.622 pp. 577-590
ISSN:
0021-9797
Subject:
Fourier transform infrared spectroscopy; acetaldehyde; acetates; acetone; active oxygen species; carbon dioxide; catalysts; catalytic activity; dissociation; formates; humidity; oxidation; water vapor
Abstract:
... Environmental H₂O is an influential factor in the low-temperature catalytic oxidation of volatile organic compounds (VOCs), and it significantly impacts the reaction process and mechanism. Here, a series of rod-like Cu-Mn oxides were synthesised by pyrolysing Cu/Mn-BTC for acetone oxidation. The results confirm that the formation of multiphase interfaces have more excellent catalytic performance c ...
DOI:
10.1016/j.jcis.2022.04.155

11. Study on the inhibition kinetics parameters of esterases enzymes from the red palm Weevil Larvae

Author:
Takwa E. Ellakwa; Tarek R. Amin
Source:
Ecological Genetics and Genomics 2022 v.22 pp. 100113
ISSN:
2405-9854
Subject:
Rhynchophorus ferrugineus; acetates; acetone; activation energy; catalytic activity; centrifugation; cytosol; dissociation; ecological genetics; esterases; hydrolysis; insecticides; instars; pest control
Abstract:
... Aromatic esterases from the red palm weevil; Rynchophorus ferrugineus 5th instar larvae were partially fractionated using differential centrifugation technique to study some enzyme properties and possible use of some inorganic salts as enzyme inhibitors hoping for future use in the field of pest control. Cytosol soluble fraction contained most of esterases activity. Esterases catalysis was activat ...
DOI:
10.1016/j.egg.2022.100113

12. A chemo-enzymatic transformation of linalyl acetate to estragole, a phenyl propanoid ether using recombinant esterase in acetone reaction system

Author:
P. Soumya; K. Jayachandran
Source:
Process biochemistry 2022 v.121 pp. 707-715
ISSN:
1359-5113
Subject:
Bacillus subtilis; Escherichia coli; acetates; acetic acid; acetone; enzymatic hydrolysis; enzymatic treatment; esterases; genes; hydrolysis; ligands; linalool; methyl chavicol; plasmids
Abstract:
... The esterase gene from Bacillus subtilis E9 was expressed in E. coli BL21 (DE3) using the pTAC Bs-est recombinant plasmid and the enzyme was purified to determine its biocatalytic ability on the natural ester, linalyl acetate. The substrate affinity of the esterase enzyme was confirmed through docking studies on the interaction between the modelled esterase protein with the ligand. Recombinant est ...
DOI:
10.1016/j.procbio.2022.08.008

13. Anthelmintic, antimycobacterial, antifungal, larvicidal and cytotoxic activities of acetone leaf extracts, fractions and isolated compounds from Ptaeroxylon obliquum (Rutaceae)

Author:
Thanyani Emelton Ramadwa; Lyndy Joy McGaw; Mathew Adamu; Balungile Madikizela; Jacobus Nicolaas Eloff
Source:
Journal of ethnopharmacology 2021 v.280 pp. 114365
ISSN:
0378-8741
Subject:
Aedes aegypti; Aspergillus fumigatus; Candida albicans; Cercopithecus aethiops; Cryptococcus neoformans; Haemonchus contortus; Mycobacterium bovis; Mycobacterium tuberculosis; Rutaceae; acetates; acetone; anthelmintics; antibacterial properties; antifungal properties; cytotoxicity; eggs; fungi; humans; kidneys; larval development; larvicides; leaf extracts; leaves; liver; lupeol; medicinal plants; minimum inhibitory concentration; tetrazolium; traditional medicine; tuberculosis; South Africa
Abstract:
... Ptaeroxylon obliquum (Thunb.) Radlk, sneezewood, is a commonly used medicinal plant in South Africa for the treatment of parasitic infections in animals, tuberculosis (TB) and related symptoms, and other microbial infections.In this study anthelmintic, antifungal, antimycobacterial, larvicidal and cytotoxic activities of the acetone leaf extract of P. obliquum, solvent-solvent derived fractions of ...
DOI:
10.1016/j.jep.2021.114365

14. Biodegradation of diisopropyl ether, ethyl tert-butyl ether, and other fuel oxygenates by Mycolicibacterium sp. strain CH28

Author:
Ingrid Zsilinszky; Balázs Fehér; István Kiss; Attila Komóczi; Péter Gyula; Zsolt Szabó
Source:
Bioremediation journal 2022 v.26 no.2 pp. 138-149
ISSN:
1547-6529
Subject:
Hydrogenophaga; acetates; acetone; alkanes; biodegradation; bioremediation; gasoline; groundwater; isopropyl alcohol; methyl ethers; mineralization; pH
Abstract:
... Growing use of recalcitrant fuel oxygenates like methyl tert-butyl ether (MTBE), ethyl tert-butyl ether (ETBE), tert-amyl methyl ether (TAME), and diisopropyl ether (DIPE) poses serious threat to aquatic environments and drinking water sources. Mycolicibacterium sp. strain CH28 was isolated earlier as a potential degrader of DIPE. Optimal culture conditions for strain CH28 were determined to be 32 ...
DOI:
10.1080/10889868.2021.1911924

15. Direct conversion of dimethyl ether and CO to acetone via coupling carbonylation and ketonization

Author:
Ziqiao Zhou; Hongchao Liu; Youming Ni; Fuli Wen; Zhiyang Chen; Wenliang Zhu; Zhongmin Liu
Source:
Journal of catalysis 2021 v.396 pp. 360-373
ISSN:
0021-9517
Subject:
acetates; acetone; benzene; carbon dioxide; catalytic activity; isotopes; moieties; propylene; pyrones
Abstract:
... Acetone is currently produced by large amount of propylene and benzene, and its synthesis from a cheap and non-petroleum material has not yet been reported. Here, we present a new method for acetone production, which involves the carbonylation of dimethyl ether (DME) to methyl acetate and its subsequent ketonization to acetone over pyridine-modified H-mordenite. This convenient approach offers an ...
DOI:
10.1016/j.jcat.2021.03.006

16. Elucidating the Role of Antisolvents on the Surface Chemistry and Optoelectronic Properties of CsPbBrₓI₃₋ₓ Perovskite Nanocrystals

Author:
Junzhi Ye; Zhenchao Li; Dominik J. Kubicki; Yunwei Zhang; Linjie Dai; Clara Otero-Martínez; Manuel A. Reus; Rakesh Arul; Kavya Reddy Dudipala; Zahra Andaji-Garmaroudi; Yi-Teng Huang; Zewei Li; Ziming Chen; Peter Müller-Buschbaum; Hin-Lap Yip; Samuel D. Stranks; Clare P. Grey; Jeremy J. Baumberg; Neil C. Greenham; Lakshminarayana Polavarapu; Akshay Rao; Robert L. Z. Hoye
Source:
Journal of the American Chemical Society 2022 v.144 no.27 pp. 12102-12115
ISSN:
1520-5126
Subject:
Fourier transform infrared spectroscopy; X-ray photoelectron spectroscopy; acetates; acetone; butanol; density functional theory; iodides; ligands; nanocrystals; nuclear magnetic resonance spectroscopy; oleic acid; photoluminescence; solar energy; transmission electron microscopy
Abstract:
... Colloidal lead-halide perovskite nanocrystals (LHP NCs) have emerged over the past decade as leading candidates for efficient next-generation optoelectronic devices, but their properties and performance critically depend on how they are purified. While antisolvents are widely used for purification, a detailed understanding of how the polarity of the antisolvent influences the surface chemistry and ...
DOI:
10.1021/jacs.2c02631

17. Free Volatile Compounds of Veronica austriaca ssp. jacquinii (Baumg.) Eb. Fisch. and Their Biological Activity

Author:
Marija Nazlić; Željana Fredotović; Elma Vuko; Nenad Vuletić; Ivica Ljubenkov; Dario Kremer; Renata Jurišić Grubešić; Edith Stabentheiner; Marko Randić; Valerija Dunkić
Source:
Plants 2021 v.10 no.11 pp. -
ISSN:
2223-7747
Subject:
2,2-diphenyl-1-picrylhydrazyl; Veronica; acetates; acetone; flavonoids; gas chromatography; hydrosols; mass spectrometry; methyl eugenol; oxygen radical absorbance capacity; palmitic acid; polyphenols; thymol; toxicity; trichomes
Abstract:
... The composition of free volatile compounds of essential oils (EO) and hydrosols (Hy) from four different localities of the species Veronica austriaca ssp. jacquinii (Baumg.) Eb. Fisch. were analyzed by gas chromatography coupled with mass spectrometry. In the EOs, the most abundant compounds identified were hexahydrofarnesyl acetone (23.34–52.56%), hexadecanoic acid (palmitic acid, 26.71–58.91%) a ...
DOI:
10.3390/plants10112529

18. In vitro acaricidal activity of essential oil and crude extracts of Laurus nobilis, (Lauraceae) grown in Tunisia, against arthropod ectoparasites of livestock and poultry: Hyalomma scupense and Dermanyssus gallinae

Author:
Dhouha Alimi; Azhar Hajri; Selim Jallouli; Hichem Sebai
Source:
Veterinary parasitology 2021 v.298 pp. 109507
ISSN:
0304-4017
Subject:
Dermanyssus gallinae; Hyalomma; Laurus nobilis; acaricidal properties; acetates; acetone; adults; cyclohexanes; drugs; essential oils; ethanol; females; gallic acid; larvae; linalool; livestock; mites; mortality; oils; quercetin; sabinene; ticks; toxicity; veterinary parasitology; Tunisia
Abstract:
... The current study assayed the toxicity of Laurus nobilis essential oil and crude extracts obtained using solvents of increasing polarity (cyclohexane, acetone and ethanol), on two ectoparasites of veterinary importance, i.e., Hyalomma scupense and Dermanyssus gallinae.The major components detected in bay laurel essential oil were dominated by 1.8-cineole (46.56 %), α-terpinenyl acetate (13.99 %), ...
DOI:
10.1016/j.vetpar.2021.109507

19. Purification of high molecular weight thermotolerant esterase from Serratia sp. and its characterization

Author:
Kamal Kumar Bhardwaj; Shweta Kishen; Akshita Mehta; Abhishek Sharma; Reena Gupta
Source:
3 Biotech 2021 v.11 no.6 pp. 308
ISSN:
2190-572X
Subject:
EDTA (chelating agent); Serratia marcescens; acetates; acetone; acetonitrile; acyl carrier protein; ammonium sulfate; cellulose; chromatography; dimethyl sulfoxide; esterases; ethanol; glycerol; half life; heat tolerance; hydrolysis; isopropyl alcohol; matrix-assisted laser desorption-ionization mass spectrometry; methanol; molecular weight; octoxynol; pH; polyacrylamide gel electrophoresis; polysorbates; sodium dodecyl sulfate; solvents
Abstract:
... In the present study, an extracellular esterase from Serratia sp. was purified 24.46 fold using an initial ammonium sulphate precipitation step (optimized concentration of 30–40%), followed by Diethylaminoethyl cellulose (DEAE-cellulose) chromatography and size exclusion Sephadex G-200 column chromatography steps. The molecular weight of the esterase using native polyacrylamide gel electrophoresis ...
DOI:
10.1007/s13205-021-02852-2

20. Surface modification of TiO2 with Pd nanoparticles for enhanced photocatalytic oxidation of benzene micropollutants

Author:
Dmitry Selishchev; Dmitry Svintsitskiy; Larisa Kovtunova; Evgeny Gerasimov; Alexey Gladky; Denis Kozlov
Source:
Colloids and surfaces 2021 v.612 pp. 125959
ISSN:
0927-7757
Subject:
acetates; acetone; air; benzene; byproducts; fabrics; ligands; nanocatalysts; oxidation; palladium; photocatalysis; photocatalysts; photolysis; pollutants; temperature; thermal degradation; titanium dioxide; ultraviolet radiation; vapors
Abstract:
... This paper describes a simple method for the modification of TiO₂ surface with palladium to prepare a highly active photocatalyst for oxidation of benzene micropollutants in air. The method consists of the impregnation of anatase TiO₂ with a solution of palladium (II) acetate (Pd(OAc)₂) in acetone followed by photodecomposition of Pd(OAc)₂ under UV irradiation. No additional electron donor is requ ...
DOI:
10.1016/j.colsurfa.2020.125959